Do both people who are helping to create an item need the item creation feat?
It is possible for more than one character to cooperate in the creation of an item, with each participant providing one or more of the prerequisites. In some cases, cooperation may even be necessary.
If two or more characters cooperate to "create an item", they must agree among themselves who will be considered the creator for the purpose of determinations where the creator's level must be known.
Does this imply that those who fulfill the requirements need to have the ability to create the item?
If you can't "create an item" can you cooperate?
Why would there even be an agreement if one of the cooperaters couldn't create the item in the first place.
Do both people who are helping to create an item need the item creation feat?
From what I read, you can cooperate even if you can't create the item on your own - it's enough if at least one of the participants has the feat. The others could be casting spells, for instance.
It is possible for more than one character to cooperate in the creation of an item, with each participant providing one or more of the prerequisites. In some cases, cooperation may even be necessary.
If two or more characters cooperate to "create an item", they must agree among themselves who will be considered the creator for the purpose of determinations where the creator's level must be known.
Emphasis mine.
Why would there even be an agreement if one of the cooperaters couldn't create the item in the first place.
You are right, it seems strange that you can be considered the creator even if you don't have the feat :/. I guess they meant that, if two or more of the characters have the feat, they must agree who will be the creator?
So, IMHO: by RAW, you don't need the feat to cooperate and you can be the creator either way; RAI, I can't tell either way, but seems strange.
